XSane does not support any scanners itself. XSane uses the SANE library
to talk to scanners that are supported by SANE.
XSane is designed for acquiring images with scanners (there are other
devices like cameras and video devices supported by SANE, but XSane is
not designed for that purpose). You can scan to file, make a photocopy,
create a fax, and start XSane from the GIMP as a GIMP plug-in.
XSane may not work correctly or you may not be able to take full
advantage of all functions if you do not configure XSane correctly. See
the documentation at /usr/share/sane/xsane/doc/sane-xsane-doc.html.
The XSane home page is http://www.xsane.org/.